CN112028283A - Method for recycling and treating brewing waste liquid - Google Patents
Method for recycling and treating brewing waste liquid Download PDFInfo
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- CN112028283A CN112028283A CN202010924825.8A CN202010924825A CN112028283A CN 112028283 A CN112028283 A CN 112028283A CN 202010924825 A CN202010924825 A CN 202010924825A CN 112028283 A CN112028283 A CN 112028283A
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- 239000002699 waste material Substances 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 31
- 239000007788 liquid Substances 0.000 title claims abstract description 28
- 238000004064 recycling Methods 0.000 title claims abstract description 16
- 239000010902 straw Substances 0.000 claims abstract description 79
- 239000000203 mixture Substances 0.000 claims abstract description 44
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 238000001914 filtration Methods 0.000 claims abstract description 24
- 238000002156 mixing Methods 0.000 claims abstract description 21
- 238000001035 drying Methods 0.000 claims abstract description 20
- 241000209140 Triticum Species 0.000 claims abstract description 16
- 235000021307 Triticum Nutrition 0.000 claims abstract description 16
- 240000008042 Zea mays Species 0.000 claims abstract description 16
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 claims abstract description 16
- 235000002017 Zea mays subsp mays Nutrition 0.000 claims abstract description 16
- 235000005822 corn Nutrition 0.000 claims abstract description 16
- 238000001027 hydrothermal synthesis Methods 0.000 claims abstract description 13
- 239000000706 filtrate Substances 0.000 claims abstract description 12
- 150000001875 compounds Chemical class 0.000 claims abstract description 11
- 235000007164 Oryza sativa Nutrition 0.000 claims abstract description 7
- 235000009566 rice Nutrition 0.000 claims abstract description 7
- 238000004140 cleaning Methods 0.000 claims abstract description 4
- 240000007594 Oryza sativa Species 0.000 claims abstract 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 8
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 6
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 5
- 239000000920 calcium hydroxide Substances 0.000 claims description 5
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 claims description 5
- 230000035484 reaction time Effects 0.000 claims description 5
- 239000010907 stover Substances 0.000 claims description 5
- 150000007514 bases Chemical class 0.000 claims description 4
- 235000011116 calcium hydroxide Nutrition 0.000 claims description 4
- 239000011736 potassium bicarbonate Substances 0.000 claims description 4
- 229910000028 potassium bicarbonate Inorganic materials 0.000 claims description 4
- 235000015497 potassium bicarbonate Nutrition 0.000 claims description 4
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 4
- 235000011181 potassium carbonates Nutrition 0.000 claims description 4
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 claims description 4
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 4
- 235000017550 sodium carbonate Nutrition 0.000 claims description 4
- 238000003672 processing method Methods 0.000 claims description 3
- 238000011084 recovery Methods 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 235000013339 cereals Nutrition 0.000 claims 1
- 230000000052 comparative effect Effects 0.000 description 13
- 239000002245 particle Substances 0.000 description 12
- 235000013405 beer Nutrition 0.000 description 11
- 239000002351 wastewater Substances 0.000 description 10
- 239000012065 filter cake Substances 0.000 description 7
- 241000209094 Oryza Species 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000010865 sewage Substances 0.000 description 5
- 239000005416 organic matter Substances 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- 241000196324 Embryophyta Species 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000011514 vinification Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 240000004808 Saccharomyces cerevisiae Species 0.000 description 2
- 150000001413 amino acids Chemical class 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000000855 fermentation Methods 0.000 description 2
- 230000004151 fermentation Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003895 organic fertilizer Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- KMUONIBRACKNSN-UHFFFAOYSA-N potassium dichromate Chemical compound [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KMUONIBRACKNSN-UHFFFAOYSA-N 0.000 description 2
- 102000004169 proteins and genes Human genes 0.000 description 2
- 108090000623 proteins and genes Proteins 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 240000005979 Hordeum vulgare Species 0.000 description 1
- 235000007340 Hordeum vulgare Nutrition 0.000 description 1
- 238000013124 brewing process Methods 0.000 description 1
- 238000010000 carbonizing Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 150000002337 glycosamines Chemical class 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000011081 inoculation Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F5/00—Fertilisers from distillery wastes, molasses, vinasses, sugar plant or similar wastes or residues, e.g. from waste originating from industrial processing of raw material of agricultural origin or derived products thereof
- C05F5/006—Waste from chemical processing of material, e.g. diestillation, roasting, cooking
- C05F5/008—Waste from biochemical processing of material, e.g. fermentation, breweries
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/32—Nature of the water, waste water, sewage or sludge to be treated from the food or foodstuff industry, e.g. brewery waste waters
- C02F2103/325—Nature of the water, waste water, sewage or sludge to be treated from the food or foodstuff industry, e.g. brewery waste waters from processes relating to the production of wine products
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Biotechnology (AREA)
- Botany (AREA)
- Water Treatment By Sorption (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
One or more embodiments of the present disclosure provide a method for recycling and treating wine brewing waste liquid, including: carrying out hydrothermal reaction on rice straws, corn straws, wheat straws and water, and then sequentially filtering and drying to obtain a straw mixture; mixing the straw mixture, an alkaline compound and water in sequence, and then filtering and cleaning to obtain a modified straw mixture; and standing and filtering the brewing waste liquid in sequence, and mixing the filtrate and the modified straw mixture in sequence. The method for recovering and treating the wine brewing waste liquid can efficiently recover organic matters in the wine brewing waste liquid.
Description
Technical Field
One or more embodiments of the present specification relate to the technical field of liquor making waste, and in particular, to a method for recovering and treating liquor making waste.
Background
After the wine is produced, wine-making waste liquid is inevitably generated. Taking beer as an example, the beer production mainly takes corn and barley as raw materials. The beer wastewater mainly comprises wheat soaking wastewater, saccharification wastewater, waste yeast liquid, washing wastewater, cooling drainage and the like. The main components of the sewage are amino acid, sugar and protein, and the main water quality indexes are as follows: 1000-25000 mg/L, BOD-700-1500 mg/L COD, 300-600 mg/L suspended matter SS, 30-60 mg/L, PH-5-6 total nitrogen content TN. The beer wastewater belongs to biodegradable organic wastewater with medium concentration, does not contain toxic substances, and in each wastewater, the organic matter concentration of the saccharification wastewater and the waste yeast liquid is higher, and the COD reaches more than 1000 mg/L.
The production process of beer determines the intermittency of waste water discharge, and the waste water amount for producing 1 ton of beer is 12-20m3. With the stricter requirements of China on sewage discharge, in order to ensure that effluent reaches the standard for discharge, the existing treatment process of the brewing waste liquid is as follows: firstly, standing and filtering to remove suspended substances SS; then carrying out biological fermentation to remove organic matters in the sewage.
Although the treatment process of the waste liquid can enable the sewage discharge to reach the national standard, the method has the following defects: 1. the treatment period of the sewage is longer, so that the production cost of a winery is increased; 2. pollutants such as waste gas and the like can be generated by biological fermentation; 3. a large amount of organic matters in the waste liquid can not be effectively utilized, and resource waste is caused.
Disclosure of Invention
In view of the above, an object of one or more embodiments of the present disclosure is to provide a method for recovering and treating brewery waste liquid, which can efficiently recover organic substances in the brewery waste liquid.
In view of the above, one or more embodiments of the present specification provide a method for recycling spent liquor from brewing, comprising:
1) carrying out hydrothermal reaction on rice straws, corn straws, wheat straws and water, and then sequentially filtering and drying to obtain a straw mixture;
2) mixing the straw mixture, an alkaline compound and water in sequence, and then filtering and cleaning to obtain a modified straw mixture;
3) and standing and filtering the brewing waste liquid in sequence, and mixing and filtering the filtrate and the modified straw mixture in sequence.
From the above, it can be seen that in one or more embodiments of the present specification, a method for recycling spent liquor from brewing process is provided, which first comprises the steps of 1) partially carbonizing plant stalks (rice straw, corn stalk, wheat straw) so as to improve the adsorption capacity of the plant stalks; secondly, soaking the straw mixture by using an alkaline compound to generate more active groups such as hydroxyl on the surface of the straw mixture; therefore, the modified straw mixture can effectively adsorb organic matters (amino acid, sugar, protein and the like), and the modified straw mixture after adsorbing the organic matters can be used as an organic fertilizer. The waste liquor of wine making and the waste material of plant straw are combined and used as organic fertilizer, so that the problem of recycling the waste liquor of wine making is solved, the reasonable reutilization of resources is realized, and the environment is protected.
Detailed Description
To make the objects, technical solutions and advantages of the present disclosure more apparent, the present disclosure is further described in detail below with reference to specific embodiments.
The invention provides a method for recovering and treating brewing waste liquid, which comprises the following steps:
1) carrying out hydrothermal reaction on rice straws, corn straws, wheat straws and water, and then sequentially filtering and drying to obtain a straw mixture;
2) mixing the straw mixture, an alkaline compound and water in sequence, and then filtering and cleaning to obtain a modified straw mixture;
3) and standing and filtering the brewing waste liquid in sequence, and mixing and filtering the filtrate and the modified straw mixture in sequence.
In step 1) of the present invention, the amount of each material can be selected within a wide range, but in order to improve the adsorption capacity of the modified straw mixture to the organic matter in the spent liquor, it is preferable that in step 1), the weight ratio of the straw, the corn stalk, the wheat straw and the water is 100: 40-55: 22-26: 400-600.
In step 1) of the present invention, the conditions of the hydrothermal reaction can be selected within a wide range, but in order to improve the adsorption capacity of the modified straw mixture to the organic matter in the brewery waste liquor, it is preferable that in step 1), the hydrothermal reaction at least satisfies the following conditions: the reaction is carried out under the sealing condition, the reaction temperature is 220-240 ℃, and the reaction time is 40-50 min.
In step 1) of the present invention, the conditions for drying may be selected within a wide range, but in order to enhance the drying effect, it is preferable that in step 1), the drying satisfies at least the following conditions: drying at 80-100 deg.C until the water content of the straw mixture is less than 0.5 wt%.
In step 2) of the present invention, the amount of each material can be selected within a wide range, but in order to improve the adsorption capacity of the modified straw mixture to the organic matter in the spent liquor from brewing, it is preferable that in step 2), the weight ratio of the straw mixture, the alkaline compound and the water is 100: 10-15: 250-400.
In step 2) of the present invention, the conditions for mixing may be selected within a wide range, but in order to increase the contact frequency and contact time between the raw materials, it is preferable that in step 2), the mixing is performed by stirring for a mixing time of 24 to 48 hours.
In step 2) of the present invention, the kind of the basic compound may be selected within a wide range, but in order to increase the contact frequency and contact time between the respective raw materials, it is preferable that in step 2), the basic compound is selected from at least one of calcium hydroxide, sodium carbonate, potassium carbonate, and potassium bicarbonate.
In step 3) of the present invention, the conditions for the standing may be selected within a wide range, but in order to increase the removal rate of suspended matter SS, it is preferable that in step 3), the standing satisfies at least the following conditions: the standing temperature is 15-35 ℃, and the standing time is 3-7 days.
In step 3) of the present invention, the mixing conditions can be selected within a wide range, but in order to increase the removal rate of organic substances in the spent liquor from brewing, it is preferable that in step 3), the mixing is performed by stirring for 48 to 72 hours.
In step 3) of the present invention, the amount of the modified straw mixture can be selected within a wide range, but in order to increase the removal rate of organic matters in the brewery waste liquor, it is preferable that in step 3), the weight ratio of the filtrate to the modified straw mixture is 100: 15-30.
In step 1) of the present invention, the particle size of the rice straw, corn stalk, wheat straw can be selected in a wide range, but in order to increase the removal rate of organic matters in the spent liquor for brewing, preferably, in step 1), the rice straw, corn stalk, wheat straw each independently satisfy: the average particle diameter is 1-5 μm.
In the present invention, in order to further improve the purification effect of the spent liquor from brewing, preferably, after step 3), the recovery processing method further comprises: adsorbing the waste liquid by active carbon; more preferably, the weight ratio of the filtrate to the activated carbon is 100: 5-10.
The present invention will be described in detail below by way of examples. COD is detected by a potassium dichromate method recorded in the determination of GB11914-89 water quality chemical oxygen demand; BOD was detected by the dilution and inoculation method described in HJ505-2009 Water quality five day Biochemical oxygen demand (BOD 5).
In the following examples 1 part by weight corresponds to 1 kg.
Example 1
1) Straw (average particle size 3 μm), corn stover (average particle size 3 μm), wheat straw (average particle size 3 μm) and water were mixed in a ratio of 100: 50: 24: performing hydrothermal reaction at a weight ratio of 500 (at a sealing condition, the reaction temperature of 230 ℃ and the reaction time of 45min), filtering, and drying the filter cake (the drying temperature of 90 ℃ and the drying time of the filter cake are up to 0.4 wt%) to obtain a straw mixture;
2) mixing straw mixture, alkaline compound (calcium hydroxide) and water according to the weight ratio of 100: 13: 300 for 36 hours, then filtering, and washing a filter cake for 3 times by using water to obtain a modified straw mixture;
3) standing the brewing waste liquor in sequence (the standing temperature is 25 ℃, the standing time is 5 days), then filtering, and mixing the filtrate and the modified straw mixture according to the weight ratio of 100: 20 for 54 h.
Example 2
1) Straw (average particle size 1 μm), corn stover (average particle size 1 μm), wheat straw (average particle size 1 μm) and water were mixed in a ratio of 100: 40: 22: performing hydrothermal reaction at a weight ratio of 400 (under a sealed condition, the reaction temperature is 220 ℃, and the reaction time is 40min), filtering, and drying a filter cake (the drying temperature is 80 ℃, and the drying is performed until the water content of the straw mixture is 0.4 wt%) to obtain a straw mixture;
2) mixing the straw mixture, alkaline compounds (calcium hydroxide, sodium carbonate, potassium carbonate and potassium bicarbonate) and water according to a ratio of 100: 10: 250 for 24 hours, then filtering, and washing a filter cake for 3 times by using water to obtain a modified straw mixture;
3) standing the brewing waste liquor in sequence (the standing temperature is 15 ℃, the standing time is 3 days), then filtering, and mixing the filtrate and the modified straw mixture according to the weight ratio of 100: 15 for 48 hours.
Example 3
1) Straw (average particle size 5 μm), corn stover (average particle size 5 μm), wheat straw (average particle size 5 μm) and water were mixed in a ratio of 100: 55: 26: performing hydrothermal reaction at a weight ratio of 600 (performed under a sealed condition, the reaction temperature is 240 ℃, and the reaction time is 50min), then filtering, and drying a filter cake (the drying temperature is 100 ℃, and the drying is performed until the water content of the straw mixture is 0.4 wt%) to obtain a straw mixture;
2) mixing the straw mixture, alkaline compounds (calcium hydroxide, sodium carbonate, potassium carbonate and potassium bicarbonate) and water according to a ratio of 100: 15: stirring for 48h according to the weight ratio of 400, then filtering, and washing a filter cake for 4 times by using water to obtain a modified straw mixture;
3) standing the brewing waste liquid in sequence (the standing temperature is 35 ℃, the standing time is 7 days), then filtering, and mixing the filtrate and the modified straw mixture according to the weight ratio of 100: 30 weight ratio stirring for 72 h.
Example 4
The process of example 1 is followed except that after step 3), the recycling process further comprises: adsorbing the waste liquid for 24 hours by using active carbon (the average particle size is 5 mu m), wherein the weight ratio of the filtrate to the active carbon is 100: 8.
comparative example 1
The procedure is as in example 1, except that the temperature of the hydrothermal reaction in step 1) is 210 ℃.
Comparative example 2
The procedure is as in example 1, except that the temperature of the hydrothermal reaction in step 1) is 260 ℃.
Comparative example 3
The procedure is as in example 1, except that no basic compound is used in step 2).
Comparative example 4
The procedure is as in example 1, except that no straw is used in step 1).
Comparative example 5
The procedure is as in example 1, except that no corn stover is used in step 1).
Comparative example 6
The procedure is as in example 1, except that no wheat straw is used in step 1).
Detection example 1
The beer brewing waste liquid is treated by the above examples and comparative examples, and then COD and BOD in the treated water are detected, and specific results are shown in Table 1. Before treatment, the COD in the beer brewing waste liquid is 1580mg/L, and the BOD is 1150 mg/L.
TABLE 1
| COD(mg/L) | BOD(mg/L) | |
| Example 1 | 59 | 38 |
| Example 2 | 68 | 42 |
| Example 3 | 62 | 40 |
| Example 4 | 45 | 36 |
| Comparative example 1 | 95 | 69 |
| Comparative example 2 | 86 | 61 |
| Comparative example 3 | 93 | 76 |
| Comparative example 4 | 77 | 59 |
| Comparative example 5 | 73 | 50 |
| Comparative example 6 | 75 | 53 |
As can be seen from the above table, the temperature of the hydrothermal reaction has an obvious influence on the treatment effect of the beer brewing waste liquid, and the use of the alkaline compound also has a decisive influence on the treatment effect of the beer brewing waste liquid; finally, it can be seen that when the straw, the corn stalk and the wheat straw are used simultaneously, the beer brewing waste liquid has the best treatment effect.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the spirit of the present disclosure, features from the above embodiments or from different embodiments may also be combined, steps may be implemented in any order, and there are many other variations of different aspects of one or more embodiments of the present description as described above, which are not provided in detail for the sake of brevity.
It is intended that the one or more embodiments of the present specification embrace all such alternatives, modifications and variations as fall within the broad scope of the appended claims. Therefore, any omissions, modifications, substitutions, improvements, and the like that may be made without departing from the spirit and principles of one or more embodiments of the present disclosure are intended to be included within the scope of the present disclosure.
Claims (10)
1. A method for recycling and treating brewing waste liquid is characterized by comprising the following steps:
1) carrying out hydrothermal reaction on rice straws, corn straws, wheat straws and water, and then sequentially filtering and drying to obtain a straw mixture;
2) mixing the straw mixture, an alkaline compound and water in sequence, and then filtering and cleaning to obtain a modified straw mixture;
3) and standing and filtering the brewing waste liquid in sequence, and mixing the filtrate and the modified straw mixture in sequence.
2. The recycling process according to claim 1, wherein in step 1), the weight ratio of the straw, corn stover, wheat straw and water is 100: 40-55: 22-26: 400-600.
3. The recovery processing method according to claim 1, wherein in step 1), the hydrothermal reaction at least satisfies the following conditions: the reaction is carried out under the sealing condition, the reaction temperature is 220-240 ℃, and the reaction time is 40-50 min.
4. The recycling treatment method according to claim 1, wherein in step 1), the drying at least satisfies the following condition: the drying temperature is 80-100 ℃, and the drying is carried out until the water content of the straw mixture is lower than 0.5 wt%.
5. The recycling treatment method according to claim 1, wherein in step 2), the weight ratio of the straw mixture, the alkaline compound and the water is 100: 10-15: 250-400.
6. The recycling method according to claim 1, wherein in step 2), the mixing is performed by stirring for 24-48 h.
7. The recovery processing method according to claim 1, wherein in step 2), the basic compound is at least one selected from the group consisting of calcium hydroxide, sodium carbonate, potassium carbonate, and potassium bicarbonate.
8. The recycling treatment method according to claim 1, wherein in step 3), the standing satisfies at least the following condition: the standing temperature is 15-35 ℃, and the standing time is 3-7 days.
9. The recycling method according to claim 1, wherein in step 3), the mixing is performed by stirring for 48-72 h;
the weight ratio of the filtrate to the modified straw mixture is 100: 15-30.
10. The recycling method according to claim 1, wherein in step 1), the straw, corn stalk and wheat straw each independently satisfy: the average grain diameter is 1-5 μm;
after step 3), the recycling process further comprises: adsorbing the waste liquid by active carbon;
the weight ratio of the filtrate to the active carbon is 100: 5-10.
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| CN202010924825.8A CN112028283A (en) | 2020-09-05 | 2020-09-05 | Method for recycling and treating brewing waste liquid |
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| CN202010924825.8A CN112028283A (en) | 2020-09-05 | 2020-09-05 | Method for recycling and treating brewing waste liquid |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104069812A (en) * | 2014-07-11 | 2014-10-01 | 南开大学 | Method for preparing modified maize straw hydrothermal charcoal by adopting KOH |
| WO2019114532A1 (en) * | 2017-12-12 | 2019-06-20 | 江苏省农业科学院 | Preparation method for composite modified straw active particulate carbon adsorption material and use of same |
| CN110694588A (en) * | 2019-10-30 | 2020-01-17 | 成都先进金属材料产业技术研究院有限公司 | Modified composite biochar and preparation method and application thereof |
-
2020
- 2020-09-05 CN CN202010924825.8A patent/CN112028283A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104069812A (en) * | 2014-07-11 | 2014-10-01 | 南开大学 | Method for preparing modified maize straw hydrothermal charcoal by adopting KOH |
| WO2019114532A1 (en) * | 2017-12-12 | 2019-06-20 | 江苏省农业科学院 | Preparation method for composite modified straw active particulate carbon adsorption material and use of same |
| CN110694588A (en) * | 2019-10-30 | 2020-01-17 | 成都先进金属材料产业技术研究院有限公司 | Modified composite biochar and preparation method and application thereof |
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Application publication date: 20201204 |